Milstein, Joshua and Mormann, Florian and Fried, Itzhak and Koch, Christof (2009) Neuronal Shot Noise and Brownian 1/f^2 Behavior in the Local Field Potential. PLoS ONE, 4 (2). e4338. ISSN 1932-6203. PMCID PMC2629847. http://resolver.caltech.edu/CaltechAUTHORS:20090831-144837029
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We demonstrate that human electrophysiological recordings of the local field potential (LFP) from intracranial electrodes, acquired from a variety of cerebral regions, show a ubiquitous 1/f^2 scaling within the power spectrum. We develop a quantitative model that treats the generation of these fields in an analogous way to that of electronic shot noise, and use this model to specifically address the cause of this 1/f^2 Brownian noise. The model gives way to two analytically tractable solutions, both displaying Brownian noise: 1) uncorrelated cells that display sharp initial activity, whose extracellular fields slowly decay in time and 2) rapidly firing, temporally correlated cells that generate UP-DOWN states.
|Additional Information:||© 2009 Milstein et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Funding was provided by a fellowship from the Sloan-Swartz Foundation to J.N. Milstein, by a Marie Curie fellowship from the European Commission to F. Mormann, and by NINDS, DARPA, NSF and the Mathers Foundation. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript. Author Contributions: Conceived and designed the experiments: IF. Performed the experiments: FM. Analyzed the data: FM. Wrote the paper: JM CK. Competing interests: The authors have declared that no competing interests exist.|
|Group:||Koch Laboratory, KLAB|
|PubMed Central ID:||PMC2629847|
|Official Citation:||Milstein J, Mormann F, Fried I, Koch C (2009) Neuronal Shot Noise and Brownian 1/f2 Behavior in the Local Field Potential. PLoS ONE 4(2): e4338. doi:10.1371/journal.pone.0004338|
|Usage Policy:||This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.|
|Deposited By:||George Porter|
|Deposited On:||14 Sep 2009 16:23|
|Last Modified:||08 Feb 2017 17:14|
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